1. Products
  2. Power Management
  3. Battery Management
  4. PMIC (DC/DC, PowerPath, and Battery Charger)
  5. MAX847


Features and Benefits

  • 80mA Output from 1 Cell at 90% Efficiency
  • 13µA Idle Mode™ (coast) Current
  • Selectable Low-Noise PWM or Low-Current Operation
  • PWM Operating Frequency Synchronized to Seven Times an External Clock Source
  • Operates at 270kHz with No External Clock
  • Automatic Backup-Battery Switchover

Product Details

The MAX847 is a complete power-supply and monitoring system for two-way pagers or other low-power digital communications devices. It requires few external components. Included on-chip are:

  • A 1-cell input, 80mA output, synchronous-rectified boost DC-DC regulator with a digitally controlled +1.8V to +4.9V output
  • Three low-noise linear-regulator outputs
  • Three DAC-controlled comparators for software- driven 3-channel A/D conversion
  • SPI™-compatible serial interface
  • Reset and low-battery (LBO) warning outputs
  • Charger for NiCd, NiMH, lithium battery, or storage capacitor for RF PA power or system backup
  • Two 1.8Ω (typical) serial-controlled open-drain MOSFET switches

An evaluation kit for the MAX847 (MAX847EVKIT) is available to aid in design and prototyping.


  • 1-Cell Powered Handheld Equipment
  • GPS Receivers
  • Two-Way Paging

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (1)

Product Recommendations

MAX847 Companion Parts

Recommended Related Parts

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.

Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
MAX847EEI+ Material Declaration Reliability Data 28-QSOP-150_MIL
Wafer Fabrication Data

PCN-PDN Information

Select a model from the dropdown below to subscribe to PCN/PDN notifications and view past notifications as well.

Sample & Buy

Ordering FAQs

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Buy Now Pricing

(**) Displayed Buy Now Price and Price Range is based on small quantity orders.


List Pricing

(*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


Lead Times

Please see the latest communication from our CCO regarding lead times.



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